Transformation of wastewater-derived dissolved organic matter below leaky sewers - Fate of amino acids and carbohydrates

被引:4
作者
Brinkmann, T [1 ]
Abbt-Braun, G [1 ]
Karle, E [1 ]
Hesse, S [1 ]
Lungar, N [1 ]
Frimmel, FH [1 ]
机构
[1] Univ Karlsruhe TH, Bereich Wasserchem & DVGW Forschungsstelle, Engler Bunte Inst, D-76131 Karlsruhe, Germany
来源
ACTA HYDROCHIMICA ET HYDROBIOLOGICA | 2004年 / 32卷 / 4-5期
关键词
humic substance; size-exclusion chromatography; column experiment; humification;
D O I
10.1002/aheh.200400542
中图分类号
X [环境科学、安全科学];
学科分类号
08 ; 0830 ;
摘要
Due to defects in sewerage systems, wastewater might contaminate groundwater. The aim of the study was to analyse the removal efficiency of organic matter from wastewater after trickling through columns filled with sand. Size-exclusion chromatography (SEC) coupled to on-line UV, dissolved organic carbon (DOC), and dissolved nitrogen (DN) detection as well as the analysis of amino acids (AA) and carbohydrates (CH) were employed as analytical tools to investigate structural changes of the dissolved organic matter (DOM). The DOC removal in the columns accounted for about 80% based on the DOC concentration of the influent. The chromatograms gained by DOC detection showed three fractions: 1) colloids and polysaccharides, 2) humic material, and 3) low-molecular-weight compounds. The DOM present in fractions 1 and 3 was removed to a much higher extent (95%, 90%) than the DOM in fraction 2 (54%) indicating ongoing humification processes. At the same time, highly bioavailable organic N compounds were lost, whereas N fractions bound to humic material remained. AA and CH belonged to the bioavailable fraction of the DOM. Despite the considerable variations of the ratios of AA and CH carbon to the DOC, a fairly constant pattern of the relative concentrations of the compounds was found. After acid hydrolysis of the column inflows, the AA pattern was dominated by glycine, alanine, glutamic acid, and aspartic acid, and the CH pattern by glucose. The relatively high concentrations of rhamnose and fucose in comparison to arabinose and xylose showed the strong microbial influence on the DOM composition.
引用
收藏
页码:316 / 327
页数:12
相关论文
共 47 条
[41]  
Schmitt D, 2001, ACTA HYDROCH HYDROB, V28, P400, DOI 10.1002/1521-401X(20017)28:7<400::AID-AHEH400>3.0.CO
[42]  
2-L
[43]   DETERMINATION OF AMINO-ACIDS IN BIOLOGICAL, PHARMACEUTICAL, PLANT AND FOOD SAMPLES BY AUTOMATED PRECOLUMN DERIVATIZATION AND HIGH-PERFORMANCE LIQUID-CHROMATOGRAPHY [J].
SCHUSTER, R .
JOURNAL OF CHROMATOGRAPHY-BIOMEDICAL APPLICATIONS, 1988, 431 (02) :271-284
[44]  
SONNENBERG LB, 1989, ACS SYM SER, V219, P3
[45]   Specific interactions of organic substances in size-exclusion chromatography [J].
Specht, CH ;
Frimmel, FH .
ENVIRONMENTAL SCIENCE & TECHNOLOGY, 2000, 34 (11) :2361-2366
[46]  
Thurman EM., 1985, Geochemistry of Natural Waters
[47]  
Watt BE, 1996, HUMIC SUBSTANCES ORG, P81